Method of exfoliating vermiculite and similar minerals



Jan. 16, 1940. c. H. BUTLER 2,l87,538

METHOD OP EXFOLIATING VERMcULTE AND SIMILAR MINERALS Origina1 F11ed Dec 17 1956 2 Sheets-Sheet 1 a1et\c e Bulter Jan. 16, 1940. c. H BUTLER 2,l87,538

METHOD OF ExFoLITNG VERMICULITE AND SIMILAR MINERALS origina1 F11ed Dec 17 1956 2 sheetssheet 2 

